A detachably replaceable rebar shredder cutter

Abstract

The utility model belongs to the field of shredder, especially involves a detachable and replaceable reinforcing steel bar shredder cutter. The utility model provides a detachable and replaceable reinforcing steel bar shredder cutter, including the shredding mechanism of installing in the inner chamber of box, the shredding mechanism includes two drive rollers coplanar rotation connection in the inner chamber of box, the outer peripheral wall of two drive rollers all along its axial direction interval fixed connection has a plurality of fixed rings, and the fixed ring on two drive rollers is staggered arrangement, the outer periphery of a plurality of fixed rings all can detachably install a plurality of double bevel tooth blocks through dismounting subassembly, double bevel tooth block has two reinforcing steel bar shredding surfaces that can be used for reinforcing steel bar shredding alternately, through the cooperation of double bevel tooth block and dismounting subassembly, without disassembling entire cutterhead or fixed ring, can realize the exchange of damaged surface and intact surface of tooth block and the independent replacement of single damaged tooth block, solve the problem that maintenance cost is high, and the downtime is long, and simultaneously double bevel surface design prolongs the overall service life of tooth block.

Description

Technical Field

[0001] This utility model belongs to the field of shredders, and in particular relates to a detachable and replaceable steel bar shredder blade. Background Technology

[0002] A shredder is a machine used for coarse crushing. It is generally used to process unprocessed raw materials or scraps to make them smaller in size. It has a wide range of applications and is also used in the shredding of steel bars. Throughout the processing, the cutting is carried out by the blades inside the shredder. The quality of the blades directly affects the quality of the subsequent processing.

[0003] In the existing technology, the blades of steel bar shredders mostly adopt an integral structure or a structure in which the tooth blocks are fixedly connected to the cutter head and the fixing ring. When the shredding surface of the tooth blocks fails due to long-term shearing stress, wear, cracking and other failures often occur. It is often necessary to disassemble and replace the entire cutter head or fixing ring together with the failed tooth blocks. It is difficult to replace a single failed tooth block independently, which not only significantly increases maintenance costs, but also greatly extends equipment downtime. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a detachable and replaceable rebar shredder blade. Through the cooperation of the double-beveled tooth blocks and the disassembly assembly, the damaged and intact surfaces of the tooth blocks can be swapped and individual damaged tooth blocks can be replaced independently without disassembling the entire cutter disc or fixing ring. This solves the problems of high maintenance costs and long downtime, while the double-beveled design extends the overall service life of the tooth blocks.

[0005] In view of this, the present invention provides a detachable and replaceable rebar shredder blade, including a shredding mechanism installed in the inner cavity of a housing. The shredding mechanism includes two drive rollers coplanarly rotatably connected to the inner cavity of the housing. A plurality of fixed rings are fixedly connected at axial intervals on the outer peripheral walls of each of the two drive rollers, and the fixed rings on the two drive rollers are arranged in an alternating pattern. A plurality of double-inclined tooth blocks are detachably mounted on the outer periphery of each of the fixed rings via a disassembly assembly. Each double-inclined tooth block has two rebar shredding surfaces that can be alternately used for rebar shredding. The disassembly assembly allows for the exchange of positions between the damaged and intact rebar shredding surfaces on the double-inclined tooth blocks, and allows for the individual disassembly and replacement of any damaged double-inclined tooth block.

[0006] In this technical solution, by combining the double-sloping tooth block with the disassembly assembly, the damaged and intact surfaces of the tooth block can be swapped and individual damaged tooth blocks can be replaced independently without disassembling the entire cutter head or fixing ring. This solves the problems of high maintenance costs and long downtime, while the double-sloping design extends the overall service life of the tooth block.

[0007] Furthermore, a drive assembly is installed at one end of the housing. The power output end of the drive assembly is coaxially connected to the end of one of the drive rollers via a coupling. A transmission assembly is provided between the two drive rollers at the end of the housing away from the drive assembly. The drive assembly, in conjunction with the transmission assembly, drives the rotating double inclined tooth blocks on the two drive rollers to rotate in opposite directions, thus tearing the steel bars.

[0008] In this technical solution, the drive component and the transmission component work together to drive the double inclined toothed blocks to rotate in opposite directions, ensuring that the steel bars are effectively torn apart.

[0009] Furthermore, the drive assembly includes a reducer bolted to the side of the housing, the power output end of the reducer being connected to one of the drive rollers via a coupling, and a drive motor bolted to the end of the reducer away from the housing, the drive end of the drive motor being connected to the power input end of the reducer via a coupling.

[0010] In this technical solution, the drive assembly uses a reducer and a drive motor connected by bolts. The reducer reduces the speed of the drive motor through gear transmission, while significantly increasing the torque, making the power output more stable and powerful, and ensuring that the rebar shredder can continuously and efficiently carry out rebar shredding operations.

[0011] Furthermore, the transmission assembly includes a rotating shaft fixedly connected to the two driving rollers, and a gear is fixedly connected to the other end of each of the two rotating shafts. The two gears mesh with each other, and the transmission ratio of the two gears is 1:1.2.

[0012] In this technical solution, the transmission component precisely controls the direction and speed of the two drive rollers through meshing gears and a specific transmission ratio, ensuring the stability of the shearing cooperation of the double inclined tooth blocks and improving the shredding efficiency.

[0013] Furthermore, the disassembly assembly includes a fixing bolt passing through both sides of the middle of the double-beveled toothed block and a threaded hole on the outer periphery of the fixing ring that corresponds to and matches the position of the fixing bolt.

[0014] In this technical solution, the disassembly component uses a fixing bolt and a threaded hole to cooperate, which is simple in structure and convenient to disassemble and assemble. It can quickly complete the flipping or individual replacement of the double inclined tooth block without complicated tools, further shortening the equipment downtime for maintenance.

[0015] Furthermore, a rectangular post is fixedly connected to the bottom center of the double-sloping toothed block, and a rectangular hole corresponding to and adapted to the position of the rectangular post is opened in the center of the outer periphery of the fixing ring.

[0016] In this technical solution, the cooperation between the rectangular column and the rectangular hole enables the precise positioning and installation of the double-sloping toothed block, avoiding toothed block misalignment that would affect the tearing effect, while not increasing the difficulty of disassembly, ensuring the positioning accuracy and ease of operation during the toothed block assembly and disassembly process.

[0017] Furthermore, a storage groove is provided at the center of the top of the double-beveled toothed block, the fixing bolt is placed in the storage groove, and the head size of the fixing bolt is smaller than the size of the inner cavity of the storage groove.

[0018] In this technical solution, the receiving groove houses the head of the fixing bolt, which can prevent the bolt head from interfering with the process of tearing the steel bar and prevent damage to the bolt body.

[0019] Furthermore, a protective cover is detachably installed on one end of the housing near the gears by bolts. The protective cover is fitted over the outside of the two gears, and its inner wall does not contact the gears.

[0020] In this technical solution, the protective cover can protect the gear from debris interference, extend the life of the transmission components, and the detachable design facilitates gear maintenance.

[0021] The beneficial effects of this utility model are: 1. This utility model, through the cooperation of double-sloping tooth blocks and disassembly components, can realize the swapping of damaged and intact surfaces of tooth blocks and the independent replacement of individual damaged tooth blocks without disassembling the entire cutter head or fixing ring. This solves the problems of high maintenance costs and long downtime. At the same time, the double-sloping design extends the overall service life of the tooth blocks.

[0022] 2. This utility model achieves precise positioning and installation of the double-sloping toothed blocks through the cooperation of rectangular columns and rectangular holes, avoiding toothed block misalignment that affects the tearing effect, while not increasing the difficulty of disassembly, ensuring positioning accuracy and ease of operation during toothed block assembly and disassembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the shredding mechanism and the transmission component of this utility model; Figure 3 This is a schematic diagram of the double-sloping tooth block structure of this utility model; Figure 4 This is a schematic diagram of the connection structure between the drive roller and the fixed ring of this utility model; Figure 5 This is an enlarged structural schematic diagram of point A of this utility model.

[0024] In the diagram: 1. Housing; 2. Protective cover; 3. Reducer; 4. Drive motor; 5. Drive roller; 6. Fixing ring; 7. Double-sloping toothed block; 8. Rotating shaft; 9. Gear; 10. Storage groove; 11. Fixing bolt; 12. Rectangular column; 13. Rectangular hole; 14. Threaded hole. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0029] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example

[0030] like Figure 1-5 As shown, this utility model provides a detachable and replaceable rebar shredder blade, including a shredding mechanism installed in the inner cavity of a housing 1. The shredding mechanism includes two drive rollers 5 coplanarly rotatably connected to the inner cavity of the housing 1. A plurality of fixing rings 6 are fixedly connected at axial intervals on the outer peripheral walls of each of the two drive rollers 5, and the fixing rings 6 on the two drive rollers 5 are staggered. A plurality of double-inclined tooth blocks 7 are detachably mounted on the outer periphery of each of the fixing rings 6 via a disassembly assembly. Each double-inclined tooth block 7 has two rebar shredding surfaces that can be alternately used for rebar shredding. The disassembly assembly allows for the swapping of the positions of the damaged and intact rebar shredding surfaces on the double-inclined tooth blocks 7, and allows for the individual disassembly and replacement of any damaged double-inclined tooth block 7. Preferably, the distance between two adjacent fixing rings 6 is adapted to the thickness of the fixing ring 6, and the thickness of the double-inclined tooth block 7 is the same as the thickness of the fixing ring 6. The fixing rings 6 and drive rollers 5 are integrally formed.

[0031] In the example of this application, during operation, the two drive rollers 5 inside the housing 1 drive the staggered fixed rings 6 on the outer periphery to rotate synchronously. The double-inclined toothed blocks 7 on the fixed rings 6 rotate with the drive rollers 5, and the steel bars are sheared and shredded through the relative motion of the two drive rollers 5. When one of the shredding surfaces of the double-inclined toothed blocks 7 is worn or cracked due to long-term shearing, it is not necessary to disassemble the entire cutter head or fixed ring 6. The connection between the toothed block and the fixed ring 6 can be disconnected simply by disassembling the components. The toothed block can then be flipped over and reassembled to enable the intact shredding surface. If both sides of the toothed block fail, the failed toothed block can still be separated and replaced by disassembling the components without affecting other intact toothed blocks or fixed rings 6. This solves the problem of high maintenance costs and long downtime caused by overall replacement. At the same time, the double-inclined design extends the effective service life of a single toothed block, further reducing consumable costs.

[0032] As a preferred example of this application, a drive assembly is installed at one end of the housing 1. The power output end of the drive assembly is coaxially connected to the end of one of the drive rollers 5 via a coupling. A transmission assembly is provided between the two drive rollers 5 at the end of the housing 1 away from the drive assembly. The drive assembly, in conjunction with the transmission assembly, drives the rotating double inclined tooth blocks 7 on the two drive rollers 5 to rotate in opposite directions, thereby tearing the steel bars.

[0033] In the example of this application, the power of the drive assembly is transmitted to one of the drive rollers 5 via a coupling, causing the drive roller 5 and the outer fixed ring 6 and double inclined tooth block 7 to rotate. At the same time, the transmission assembly at the other end of the housing 1 transmits the power synchronously to the other drive roller 5, and forces the two drive rollers 5 to rotate in opposite directions, so that the double inclined tooth blocks 7 on the two drive rollers 5 form a reverse biting shearing motion, ensuring that the steel bar can be stably torn apart.

[0034] As a preferred example of this application, the drive assembly includes a reducer 3 bolted to the side of the housing 1, the power output end of the reducer 3 being connected to one of the drive rollers 5 via a coupling, and a drive motor 4 bolted to the end of the reducer 3 away from the housing 1, the drive end of the drive motor 4 being connected to the power input end of the reducer 3 via a coupling.

[0035] In the example of this application, the power output by the drive motor 4 is first transmitted to the reducer 3. The reducer 3 converts the high-speed rotation of the motor into a low-speed rotation that is suitable for the needs of rebar shredding through the internal transmission structure, and simultaneously increases the output torque to ensure that the drive roller 5 can drive the double inclined tooth block 7 to generate sufficient shearing force, so as to avoid the rebar jamming due to insufficient torque. The drive motor 4 and the reducer 3 are both bolted to the side of the housing 1. When the motor or reducer 3 fails, the fixing bolts of the corresponding parts can be directly removed for repair or replacement without moving the drive roller 5, the fixing ring 6 and the double inclined tooth block 7. This ensures the stable output of the driving power and reduces the maintenance difficulty of the drive components.

[0036] As a preferred example of this application, the transmission assembly includes a rotating shaft 8 fixedly connected to the two drive rollers 5, and a gear 9 fixedly connected to the other end of each of the two rotating shafts 8, and the two gears 9 mesh with each other, with a transmission ratio of 1:1.2.

[0037] In the example of this application, one of the drive rollers 5 drives the gear 9 on it to rotate synchronously. Through the meshing transmission of the two gears 9, the other drive roller 5 is forced to rotate in the opposite direction, thereby causing the double inclined tooth blocks 7 on the two drive rollers 5 to form a reverse shearing motion. The specific transmission ratio ensures that the rotational speeds of the two drive rollers 5 are matched. When processing thin steel bars, the interlacing frequency is increased to avoid the problem of single tooth empty cutting and ensure that the length after tearing is uniform. When processing thick steel bars, the interlacing frequency is reduced to prolong the contact time between the teeth and the steel bars, so that the shearing force is fully transmitted and the thick steel bars are not completely torn.

[0038] As a preferred example of this application, the disassembly assembly includes retaining bolts 11 extending through both sides of the middle portion of the double-beveled toothed block 7 and threaded holes 14 formed on the outer periphery of the retaining ring 6, corresponding to and adapted to the positions of the retaining bolts 11. Preferably, the two retaining bolts 11 on the double-beveled toothed block 7 are symmetrically distributed.

[0039] In the example of this application, the fixing bolt 11 passes through the middle of the double-beveled toothed block 7 and is screwed into the threaded hole 14 of the fixing ring 6, which can firmly fix the toothed block to the outer circumference of the fixing ring 6, ensuring that the toothed block does not loosen when it rotates and shears at high speed. When it is necessary to replace or flip the toothed block, simply unscrew the fixing bolt 11 to disconnect the toothed block from the fixing ring 6. No special tools are required during the operation, which greatly simplifies the disassembly process, reduces the number of steps for replacing the toothed block, and further shortens the equipment downtime for maintenance.

[0040] As a preferred example of this application, a rectangular post 12 is fixedly connected to the bottom center of the double-sloping toothed block 7, and a rectangular hole 13 corresponding to and adapted to the position of the rectangular post 12 is opened in the center of the outer periphery of the fixing ring 6.

[0041] In the example of this application, the rectangular post 12 at the bottom of the double-sloping toothed block 7 is engaged with the rectangular hole 13 on the outer periphery of the fixing ring 6. This allows for quick positioning of the circumferential and radial positions of the toothed block during assembly, preventing misalignment of the two-axis toothed blocks due to installation offset. This ensures that the toothed block remains on the preset shearing path during rotational shearing, preventing incomplete shearing due to toothed block offset. At the same time, the engagement of the rectangular structure does not affect the disassembly of the components. When replacing the toothed block, simply pull out the rectangular post 12 to remove it, without increasing maintenance complexity, thus balancing assembly accuracy and maintenance convenience.

[0042] As a preferred example of this application, a storage groove 10 is provided at the top center of the double-beveled toothed block 7, the fixing bolt 11 is placed in the storage groove 10, and the head size of the fixing bolt 11 is smaller than the size of the inner cavity of the storage groove 10.

[0043] In the example of this application, by storing the head of the fixing bolt 11 in the storage groove 10 at the top of the toothed block, it is possible to prevent the bolt head from protruding from the surface of the toothed block and colliding with the steel bar when the toothed block is cutting the steel bar. This not only prevents the steel bar from being blocked by the bolt head and causing the tearing path to deviate, but also protects the head of the fixing bolt 11 from the pressure and wear of the steel bar, thus extending the service life of the bolt body.

[0044] As a preferred example of this application, a protective cover 2 is detachably installed on one end of the housing 1 near the gear 9 by bolts. The protective cover 2 is fitted over the outside of the two gears 9, and its inner wall does not contact the gears 9.

[0045] In the example of this application, the protective cover 2 is fitted on the outside of the two gears 9. When the transmission component is working, it prevents the steel bar debris generated during the tearing process from entering the meshing area of ​​the gears 9, avoiding the debris from getting stuck between the teeth and causing the gears 9 to jam and wear, thus extending the service life of the transmission component. The protective cover 2 is installed in a detachable manner by bolts. When it is necessary to maintain the gears 9, the protective cover 2 can be removed simply by removing the bolts.

[0046] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A detachable and replaceable rebar shredder blade, characterized in that, The shredding mechanism includes two drive rollers (5) coplanarly rotatably connected to the inner cavity of the box (1). Several fixed rings (6) are fixedly connected at intervals along the axial direction on the outer peripheral walls of the two drive rollers (5), and the fixed rings (6) on the two drive rollers (5) are staggered. Several double-inclined tooth blocks (7) are detachably installed on the outer periphery of the several fixed rings (6) through a disassembly assembly. The double-inclined tooth blocks (7) have two steel bar shredding surfaces that can be used alternately for steel bar shredding.

2. The removable and replaceable steel bar shredder blade according to claim 1, characterized in that, A drive assembly is installed at one end of the housing (1). The power output end of the drive assembly is coaxially connected to the end of one of the drive rollers (5) via a coupling. A transmission assembly is provided between the two drive rollers (5) at the end of the housing (1) away from the drive assembly. The drive assembly, in conjunction with the transmission assembly, drives the rotating double inclined tooth blocks (7) on the two drive rollers (5) to rotate in opposite directions, thus tearing the steel bars.

3. The removable and replaceable steel bar shredder blade according to claim 2, characterized in that, The drive assembly includes a speed reducer (3) bolted to the side of the housing (1). The power output end of the speed reducer (3) is connected to one of the drive rollers (5) via a coupling. A drive motor (4) is bolted to the end of the speed reducer (3) away from the housing (1). The drive end of the drive motor (4) is connected to the power input end of the speed reducer (3) via a coupling.

4. A detachable and replaceable steel bar shredder blade according to claim 2, characterized in that, The transmission assembly includes a rotating shaft (8) fixedly connected to the two drive rollers (5), and a gear (9) fixedly connected to the other end of each of the two rotating shafts (8), and the two gears (9) mesh with each other, with a transmission ratio of 1:1.

2.

5. A detachable and replaceable steel bar shredder blade according to claim 1, characterized in that, The disassembly assembly includes a fixing bolt (11) that runs through both sides of the middle of the double-sloping toothed block (7) and a threaded hole (14) that is opened on the outer periphery of the fixing ring (6) and corresponds to and fits the position of the fixing bolt (11).

6. The removable and replaceable steel bar shredder blade according to claim 1, characterized in that, A rectangular column (12) is fixedly connected to the middle of the bottom end of the double-sloping toothed block (7), and a rectangular hole (13) corresponding to and adapted to the position of the rectangular column (12) is opened in the middle of the outer periphery of the fixing ring (6).

7. A detachable and replaceable rebar shredder blade according to claim 5, characterized in that, The top center of the double-sloping toothed block (7) is provided with a storage groove (10), the fixing bolt (11) is placed in the storage groove (10), and the head size of the fixing bolt (11) is smaller than the size of the inner cavity of the storage groove (10).

8. A detachable and replaceable steel bar shredder blade according to claim 4, characterized in that, The housing (1) has a protective cover (2) installed detachably by bolts at one end near the gear (9). The protective cover (2) is fitted on the outside of the two gears (9) and its inner wall does not contact the gears (9).

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